30 ^rt. 1 — M. Yokojama . 



Family Ringiculidae 



(Tenus RIXCJICllLrA, Desbayes. 



17. JRingieula tuttsashinoennis, Yokoyama. 



PI. 1. Figs. 16, 17. 



Fdngicida muaasldnuemis. Yokoyama, Foss. Mixu-a Peniu., p. 80, pi. I. Figs, 3. 8. 

 Fiiwiicula aictata. Brauns, Geol. Eiiv. Tokio, p. 30. Tokunaga, Foss. Env. Tokyo, p. 

 32, pi. II, fig. 11. 



That this shell is not Bingicula arctata Gould as asserted by 

 Brauns and Tokunaga has already been explained in my work 

 above cited. I have here to add that there are specimens (pi. I, 

 figs. 16, 17) which have the outer lip not so thickened as in the 

 typical ones, so that the}^ approach in this respect Ringicula doliaris 

 Gould living in our seas, (Tryon's Manual, XV, p. 403. pi. VII, 

 figs, 82, 83). But these are connected with the typical form by 

 intermediate forms and differ from B. doliaris by the more abrupt- 

 ly sloping body-whorl below the suture. The spiral lines of the 

 surface which are generally distinct may often become obsolete. 



Fossil occurrence. — Otake (very numerous), Shisui, Tega, 

 Kioroshi, Shito (numerous). Also Oji, ^liinngawa and Tabata in 

 Musashi. Lower Musashino of Miyata, Yokosuka and Naganuma- 



Living. — Central Japan. 



Family Terebridse. 



Genus TEREBRA, Adanson. 



18. Terehra ligchkeaita, Dunker. 



Terehra liachkmna. Duuker, Index Moll. Mar. Jap., p. 7 1 , pi. V. figs. 13-16. Pilsbry, 

 Catalogue, p. 12. Tryou, Man. Conch., YII, p. 37, pi. XII, fig. 22. Yokoyama, 

 Foss. Miura Peuin., p. 31, pi. I, fig. 10. 



A few young specimens, the largest of which attains the 

 li eight of 30 millim. 



Fossil occurrence. — Otake and Shito. Lower Musashino of 

 Miyata. 



Living. — Central and Western Japan. 



